reproduce (this is a W=1 build):
        git remote add brauner-vfs https://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs.git
        git fetch brauner-vfs vfs.all
        git checkout brauner-vfs/vfs.all
        b4 shazam https://lore.kernel.org/r/dc097e5caa1c7df42c211fffb67f8d860a6b39da.1749848715.git.babu.moger@amd.com
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 olddefconfig
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash arch/x86/kvm/ fs/resctrl/